One Las Vegas casino chain is giving some members of its player card program a chance to cash in on the Vegas Golden Knights unexpected playoff run.

Qualified members of the Station Casinos Boarding Pass club will receive a free sports book bet on the Golden Knights — ranging in value between $5 and $250 — to win the Stanley Cup.

The Golden Knights finished their sweep of the Kings on Tuesday in the first round of the playoffs. They are listed at 4-to-1 — the lowest odds — to win the Stanley Cup. The voucher is redeemable only if Vegas is crowned champions. Stations would pay out an aggregate amount up to $1,000,000.

Invited Boarding Pass members must swipe their player club card at a kiosks on April 23 to obtain their betting voucher.